CVE-2026-26940
Published:March 19, 2026
Updated:May 18, 2026
Improper Validation of Specified Quantity in Input (CWE-1284) in the Timelion visualization plugin in Kibana can lead Denial of Service via Excessive Allocation (CAPEC-130). The vulnerability allows an authenticated user to send a specially crafted Timelion expression that overwrites internal series data properties with an excessively large quantity value.
Affected Packages
https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v8.0.0 <v8.19.13Fix Suggestion:
Update to version v8.19.13https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v9.3.0 <v9.3.2Fix Suggestion:
Update to version v9.3.2https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.2.7Fix Suggestion:
Update to version v9.2.7Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Validation of Specified Quantity in Input
EPSS
Base Score:
0.06